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Finding the Fourth Proportional to 5,156.70, 7,726.80 and 5,020.02

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Solution

The fourth proportional to 5,156.70, 7,726.80 and 5,020.02 is: 7,522.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.70 : 7,726.80 = 5,020.02 : x
  2. Step 2: Convert to fraction form
    5,156.70/7,726.80 = 5,020.02/x
  3. Step 3: Cross multiply
    5,156.70x = 7,726.80 × 5,020.02
  4. Step 4: Simplify right side
    5,156.70x = 38,788,690.54
  5. Step 5: Solve for x
    x = 38,788,690.54/5,156.70
  6. Step 6: Final answer
    x = 7,522.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.